linux-kernel - [RFC PATCH 6/6] ARM64: exynos: add the pcie node for TM2

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Date:   Mon, 26 Dec 2016 14:20:29 +0900
From:   Jaehoon Chung <jh80.chung@...sung.com>
To:     linux-pci@...r.kernel.org
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-samsung-soc@...r.kernel.org, bhelgaas@...gle.com,
        robh+dt@...nel.org, mark.rutland@....com, kgene@...nel.org,
        krzk@...nel.org, javier@....samsung.com, kishon@...com,
        will.deacon@....com, catalin.marinas@....com, cpgs@...sung.com,
        Jaehoon Chung <jh80.chung@...sung.com>
Subject: [RFC PATCH 6/6] ARM64: exynos: add the pcie node for TM2

Add the Exxynos5433 pcie node for TM2.
This pcie device is used for supporting WiFi.

And some gpios are already requested from pinctrl. so it doesn't need to
initialize.
GPJ2-0 is used for supplying to WiFi PCIe chip.

Signed-off-by: Jaehoon Chung <jh80.chung@...sung.com>
---
 arch/arm64/boot/dts/exynos/exynos5433-pinctrl.dtsi |  7 +++++++
 arch/arm64/boot/dts/exynos/exynos5433-tm2.dts      | 11 +++++++++--
 arch/arm64/boot/dts/exynos/exynos5433.dtsi         | 23 ++++++++++++++++++++++
 3 files changed, 39 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/exynos/exynos5433-pinctrl.dtsi b/arch/arm64/boot/dts/exynos/exynos5433-pinctrl.dtsi
index ad71247..3e8b728 100644
--- a/arch/arm64/boot/dts/exynos/exynos5433-pinctrl.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos5433-pinctrl.dtsi
@@ -183,6 +183,13 @@
 		interrupt-controller;
 		#interrupt-cells = <2>;
 	};
+
+	pcie_wlanen: pcie-wlanen {
+		samsung,pins = "gpj2-0";
+		samsung,pin-function = <0>;
+		samsung,pin-pud = <3>;
+		samsung,pin-drv = <3>;
+	};
 };
 
 &pinctrl_finger {
diff --git a/arch/arm64/boot/dts/exynos/exynos5433-tm2.dts b/arch/arm64/boot/dts/exynos/exynos5433-tm2.dts
index f21bdc2..c84a2ad 100644
--- a/arch/arm64/boot/dts/exynos/exynos5433-tm2.dts
+++ b/arch/arm64/boot/dts/exynos/exynos5433-tm2.dts
@@ -737,6 +737,15 @@
 	bus-width = <4>;
 };
 
+&pcie {
+	assigned-clocks = <&cmu_fsys CLK_MOUT_SCLK_PCIE_100_USER>,
+			<&cmu_top CLK_MOUT_SCLK_PCIE_100>;
+	assigned-clock-parents = <&cmu_top CLK_SCLK_PCIE_100_FSYS>,
+			<&cmu_top CLK_MOUT_BUS_PLL_USER>;
+	assigned-clock-rates = <0>, <100000000>;
+	status = "okay";
+};
+
 &pinctrl_alive {
 	pinctrl-names = "default";
 	pinctrl-0 = <&initial_alive>;
@@ -836,7 +845,6 @@
 	pinctrl-0 = <&initial_ese>;
 
 	initial_ese: initial-state {
-		PIN(IN, gpj2-0, DOWN, LV1);
 		PIN(IN, gpj2-1, DOWN, LV1);
 		PIN(IN, gpj2-2, DOWN, LV1);
 	};
@@ -851,7 +859,6 @@
 		PIN(IN, gpr3-1, DOWN, LV1);
 		PIN(IN, gpr3-2, DOWN, LV1);
 		PIN(IN, gpr3-3, DOWN, LV1);
-		PIN(IN, gpr3-7, NONE, LV1);
 	};
 };
 
diff --git a/arch/arm64/boot/dts/exynos/exynos5433.dtsi b/arch/arm64/boot/dts/exynos/exynos5433.dtsi
index 2a15f18..da287f4 100644
--- a/arch/arm64/boot/dts/exynos/exynos5433.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos5433.dtsi
@@ -1457,6 +1457,29 @@
 			samsung,fsys-sysreg = <&syscon_fsys>;
 			status = "okay";
 		};
+
+		pcie: pcie@...00000 {
+			compatible = "samsung,exynos5433-pcie", "snps,dw-pcie";
+			#address-cells = <3>;
+			#size-cells = <2>;
+			device_type = "pci";
+			interrupts = <GIC_SPI 245 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "intr";
+			clocks = <&cmu_fsys CLK_PCIE>,
+			       <&cmu_fsys CLK_PCLK_PCIE_PHY>;
+			clock-names = "pcie", "pcie_bus";
+			num-lanes = <1>;
+			pinctrl-names = "default";
+			phys = <&pcie_phy>;
+			phy-names = "pcie-phy";
+			pinctrl-0 = <&pcie_bus &pcie_wlanen>;
+			reg = <0x156b0000 0x1000>, <0x15700000 0x1000>,
+			    <0x0c000000 0x1000>;
+			reg-names = "elbi", "dbi", "config";
+			ranges = <0x81000000 0 0	  0x0c001000 0 0x00010000
+				  0x82000000 0 0x0c011000 0x0c011000 0 0x3feefff>;
+			status = "disabled";
+		};
 	};
 
 	timer: timer {
-- 
2.10.2